Improvement in dooes foe stoves and fuehaoes



F. S. BISSELL.

Stove Door.

Patented Aug. '20, 1867.

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FRANK S. BISSELL. OF PITTSBUHG, PENNSYLVANIA. Letters Patent No. 67,942,dated August 20, I867.

IMPROVEMENT IN DOORS FOR STOVES AND FURNACES.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, FRANK S. BIssELL, of Pittsburg, in the county ofAllegheny, and State of Pennsylvania, have invented a new and usefulImprovement in Doors for Stoves and Furnaces; and Ido hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to make and use the same,reference being had to the accompanying drawings, forming part of thisspecification.

This inveutionrelates to a new and improved method ofpreventingaccidents and damage by fire from the upsetting of stoves inrailroad cars, and for other purposes and it consists in so arranging astove or furnace door that it is closed by springs, which springsoperate upon it whenever it is not held open by force, as will'hehereinafter described.

Figure 1 represents a front elevation of the stove with the doorattached, partly in section.

Figure 2 is a horizontal section through the line :a x. a

Similar letters of reference indicate corresponding parts.

A'represents the stove or furnace, and B is the door. In this example ofmy invention, the door is represented as having a vertical motionbetween two upright tubular pieces, which are marked 0; D represents thedoor-way or throat of the stove projecting from the stove around theaperture, and presenting an even surface,

against which the door slides. The inner edges of the sides form ways,which guide and support th'e'door in its.

motion up and down. The tubular .side pieces C .ure attached to theouter edge of the door-way D, and are connected together at the top inany suitable manner. The lower portion of these pieces G contain spiralsprings, e, which are attached to the bottom ends of the tubes C. Thetops of the spring are attached to small bars, which project from thedoor. The upper portion of the tubes C is slotted, for the purpose oilallowing the bars of the door to move up and down over the spring. Thesebars are seen at a, fig. 2. The door is held in place by jaws 'upon itsinside, as seen in the same figure. It is intended that the door shallbe separated from the stove as much as would be convenient, and that thedoor-way D should be composed of zinc or some other equally goodnon-conducting metal, for the purpose of preventing the door from beingwarped by the heat of 'the fire. v

I do not confine myself to the particular arrangement of the door hereinshown and described. It may be closed upward or be moved sidewiseinstead of vertically; other kinds of springs may also be used. The doormay be operated by a knob, as seen at d, or by a lever attached to it inany suitable'manner. It will be seen that when the door is raised itwill be brought down and closed by the springs automatically, thusconfining the contents of the stove in case of accident, and therebypreventing the disastrous results which not unfrequently occur inconsequence of the upsetting of the stove.

Having thus described my invention, what I claim as new,.and desiretosecure by Letters Patent, is-

A stone or furnace door, which is closcd'by springs, substantiallyin themanner herein shown and described and for the purposes set forth.

The above specification of my invention signed by me this 27th day ofMarch, 1867.' v

FRANK SQBISSEL L.

Witnesses:

WM. S. BIssELL,

WM. H. COLLINGWOOD.

